linux-kernel - Re: [PATCH] arm64/neon: Disable -Wincompatible-pointer-types when building with Clang

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Message-ID: <CAKwvOdke_HbSrmGO5ThNy4o87G4BhA845QcgZFUTB7m6cBHTDg@mail.gmail.com>
Date:   Fri, 15 Feb 2019 11:43:35 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Will Deacon <will.deacon@....com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Brown <broonie@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Sandeep Patil <sspatil@...gle.com>,
        Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] arm64/neon: Disable -Wincompatible-pointer-types when
 building with Clang

On Fri, Feb 15, 2019 at 11:28 AM Ard Biesheuvel
<ard.biesheuvel@...aro.org> wrote:
>
> On Fri, 15 Feb 2019 at 20:25, Nick Desaulniers <ndesaulniers@...gle.com> wrote:
> >
> > On Fri, Feb 15, 2019 at 11:20 AM Ard Biesheuvel
> > <ard.biesheuvel@...aro.org> wrote:
> > > Provided that we stop sending Clang enablement patches to -stable:
> >
> > What does that mean?  We're trying to provide clang support back to
> > 4.4 LTS branches. (so 4.4, 4.9, 4.14, 4.19).
>
> I understand that is what you are attempting, but that does not mean
> it /belongs/ in -stable.
>
> There are rules for stable, and people that track stable kernels (such
> as the distros) should be able to rely on us to only backport bug
> fixes, not linker script changes and other updates that fix issues
> that did not exist when those kernels were released.
>
> It is unclear to me how these clang changes benefit those users.

If you're referring to
https://www.spinics.net/lists/stable/msg278381.html, that's fair (I
think those were helpful for LLD support on arm64).

Why didn't you speak up then?  Why is this coming up now?
-- 
Thanks,
~Nick Desaulniers